"Man is a miracle." ~~ The Koretser Rabbi
"Never expose yourself unnecessarily to danger; a miracle may not save you…and if it does, it will be deducted from your share of luck or merit." ~~ Traditional Proverb
"A man should believe in God through faith, not because of miracles." ~~ Nachman of Bratslav
"Stand not in a place of danger. saying, “a miracle may happen to me!”" ~~ Talmud, Shabbat
"He who depends on a miracle will experience none." ~~ Sefer Hachinukh
"A miracle to one is often a misfortune to another." ~~ Eliezer Steinman
"Hope for a miracle—but don’t depend on one." ~~ (based on) Talmud, Megillah 7b
"One must not rely on miracles happening." ~~ Talmud, Pesachim
"The man to whom a miracle happens is not aware of it himself." ~~ Talmud, Niddah
"A miracle cannot prove that which is impossible; it is useful only as a confirmation of what is possible." ~~ Maimonides
"It is not the believer, but the non-believer, who asks for a miracle and depends on it." ~~ Shmuel Hugo Bergman
"Just as the world cannot exist without livelihood, so it cannot be without miracles and wonders." ~~ Shocher Tov